I buy B-stock from them regularly. I do love these guys and totally respect their 0 sale/group-but business model, they have earned that respect by making such a good budget through top tier audiophile line of products. The nifty trick about B-stock is that it includes returns which are actually w/o cosmetic imperfections. They could sell a group-but exclusive, but it would be along the lines of Massdrop or another community gets first taste, not that it would only ever be available through that site.